Too Short

So when me & my husband messed around several years ago I found his poll to be on the shorter end & when I’d get done having sex with him I’d still be able to have sex with other people cuz we were just FWB at the time. Then when we first got married a couple years ago I didn’t think much of it cuz I no longer really had a sex drive. Now, the past couple months my sex drive has been like a roller coaster & when it is higher (or really even existent) he definitely can’t satisfy me. Since we’re married & no longer just FWB I’m not sure what to do. Masturbation doesn’t help & it’s not like he can just make himself bigger. I’m wondering if maybe my sex drive died cuz he couldn’t get me off that well to begin with. Idk. I’m just confused & lost atm.